Wide-Opening Composition Container for Uniform Magnetic Particle Dispersion
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Solution Overview
Problem
The existing compositions for magnetic materials exhibit variations in relative magnetic permeability when the composition is stirred and gradually taken out from a container, leading to inconsistent magnetic properties.
Innovation Solution
A composition container with specific design features, including a container with an opening portion, a composition containing magnetic particles and a liquid component with controlled viscosity, and a container geometry that optimizes stirring and particle distribution, is used to minimize variations in relative magnetic permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the composition is accommodated in a container with conventional geometry, then the container is easy to manufacture, but the magnetic particles become unevenly distributed when the composition is stirred and taken out, causing variation in relative magnetic permeability
Solution Approach 1:
The container is designed with a specific geometric configuration where the cross-sectional area at the opening portion is substantially equal to or larger than the maximum cross-sectional area at any other position. This local geometric optimization at the opening portion ensures uniform magnetic particle distribution during stirring and discharge, resolving the contradiction between manufacturing precision and device complexity by focusing the design constraint on a specific local feature rather than the entire container structure.
2Ease of operation
If the composition has low viscosity, then the composition is easy to stir and process, but the magnetic particles settle unevenly, causing variation in relative magnetic permeability
Solution Approach 1:
The viscosity of the composition is optimized to a specific range (10 to 1000 cP at 25°C) that balances two opposing requirements: low enough viscosity to allow easy stirring and processing, but high enough to prevent uneven settling of magnetic particles. This parameter optimization resolves the contradiction between ease of operation and manufacturing precision by finding the optimal viscosity window that satisfies both conditions simultaneously.
3Manufacturing precision
If the container has a small opening portion, then the composition can be stored compactly, but the magnetic particles become unevenly distributed during discharge
Solution Approach 1:
The container is designed with a geometric configuration where the cross-sectional area at the opening portion is substantially equal to or larger than the maximum cross-sectional area at any other position. This dimensional optimization at the opening portion ensures uniform magnetic particle distribution during discharge while maintaining compact overall container volume, resolving the contradiction between manufacturing precision and container size by optimizing the geometric distribution of space within the container.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed composition container design ensures consistent magnetic properties by improving stirring efficiency and uniform particle distribution, thereby reducing variations in relative magnetic permeability between magnetic materials produced from the composition.
Implementation Method 1
a viscosity of the composition measured under conditions of a temperature of 25° C. and a shear rate of 0.1 sec−1 is 1 to 1,000 Pa·s
Implementation Method 2
a composition that is accommodated inside the container and contains magnetic particles and a liquid component
Data Source
AI summary
An object of the present invention is to provide a composition container in which a variation in relative magnetic permeability is less likely to occur between magnetic materials obtained in a case where a composition accommodated in the container is stirred and then gradually taken out from the container and the composition is used for producing the magnetic material each time.The composition container of the present invention is a composition container including a container having an opening portion and a composition that is accommodated inside the container and contains magnetic particles and a liquid component and satisfies predetermined physical properties, in which a ratio of an area of the opening portion of the container to a maximum area of an inner wall surface of the container in a cross section orthogonal to a height direction of the container is 0.8 or more and 1.0 or less, and an inclination W of the inner wall surface of the container with respect to the height direction of the container at a height position of half of a height H in the container at which the composition is present is 200 or less.